Brokken, mirabilis will grow and pitcher in highland conditions
Not for me, it won't. I have two types of mirabilis - one is "Viking" the other is echinostoma. When I took Viking out of its lowland conditions, the papery leaves started to dry out almost immediately. I live in San Jose where humidity is naturally low - that maybe a big difference between yours and mine, but in my experience, mirabilis is quite atune to its lowland conditions.
"There is no pain as great as being alive,
no burden heavier than that of conscious life. "